Combined release fire and straight fire gun



p 3, 4 c. A. YOUNG 2,406,981

' COMBINED RELEASE FIRE AND STRAIGHT FIRE GUN Filed Dec. 7, 1942villi/11E: xiii- {M INVENTOR. I Na s Patented Sept. 3, 1946 UNITEDSTATES PATENT OFFICE COMBINED RELEASE FIRE AND STRAIGHT FIRE GUN 4Claims.

This invention relates to guns, it more particularly relating to guns ofthe small arm type and especially relates to means for readilyconverting the gun into a straight fire or a release fire gun, theconstruction being especially adapted to a gun of the repeating type.

One of the objects of the invention is to provide a more simple andeffective means in a gun of the type referred to to place the mechanismin a position for straight fire or for release fire.

A further object of the invention is to provide improved means for thepurpose specified more particularly adapted to a gun in which thesupporting frame or housing for the gun is neces sarily confined as todimensions.

Referring to the drawing:

Fig. 1 is a longitudinal section of so much of a gun as is necessary toillustrate the invention, a portion of the parts being shown in sideelevation, the parts being shown arranged for release fire and in theposition they occupy before the hammer has been released by the sear.

Fig. 2 is a longitudinal section showing some of the parts in Fig. 1 butshowing the parts in the position occupied after the sear has beenoperated to release the hammer.

Fig. 3 is a longitudinal section of so much of a gun as is necessary toillustrate the invention showing the parts in a position for straightfire.

Fig. 4 is a longitudinal section of some of the parts shown in Fig. 3showing the parts in the position assumed after the sear for the hammerhas been released.

As is now well known in the art, release fire guns are those which fireupon releasing pressure upon the trigger after it has been drawn to itsrearmost position as distinguished from guns which fire upon a rearwardpull upon the trigger, the release fire being desirable to avoidflinching upon the part of the shooter, and it is desirable to providefor using the gun either as a release fire gun or as a straight firegun.

Referring to the drawing, I represents a portion of the stock of thegun, 2 the barrel and 3 an intermediate metallic housing to which thestock is connected and which supports the barrel and the firingmechanism, this housing having connected thereto the usual finger guard4 extends the stationary pin 9 which is supported by the housing. Thesear for the hammer 6 is indicated at l 0, this sear being pivotallymounted upon a fixed rod II which is supported by the housing, the searbeing spring-pressed to a position to engage a notch in the hammer bythe spring l2. The rear end of the sear overlies the trigger in closecontact therewith so that when the trigger is swung to the positionshown in Figs. 2. and 4 it will release the hammer. A detent, which inthe present case is gravity-operated to inoperative position, isindicated at l3, this detent being pivoted upon the rod II and having abent nose M which is adapted to engage with the lower inclined wall 15of a recess IS in the hammer when the gun is to be used for releasefire. This detent has a rearwardly extending tail l6 having its rear endbent to form a nose. l'l adapted to cooperate with a projection 7 on thetrigger when the gun is to be used for release firing but to be entirelyfree therefrom when the gun is to be used for straight firing.

Referring now to Figs. 3 and 4, for straight fire the trigger I is movedto its rearmost position so that the fixed pin 9 will engage with theforward end of the slot 8. When the trigger is moved to this position,this removes the projection 1 on the trigger out of the path of the noseI! of the detent whereby the nose M of the detent will be out of thepath of the inclined wall 15' so that the detent therefore will have noeffect in holding the hammer cooked, the hammer being held in cockedposition only by the sear l 0. Further pressure upon the trigger willcause it to swing about the pin 9 to the position shown in Fig. 4 tooperate the sear to release the hammer and permit the gun to fire as astraight gun, the hammer being impelled to firing position by its spring6.

Referring now to Figs. 1 and 2, when the gun is to be used as a releasefire, with the hammer down the trigger is moved forwardly to the limitof its forward movement which causes the inclined projection l thereonto be aligned with the nose I! of the detent; the forward movement ofthe trigger being limited by the contact of the pin 9 with the rear wallof the slot 8. Further pressure upon the trigger will cause it to swingupwardly about the fixed pin 9 to not only cause the sear N to releasethe hammer but also move the nose M of the detent into the path of theinclined wall l5 of the recess in the hammer so as to still maintain thehammer cocked, the inclined portion of the projection I riding on thenose I! as shown in Fig. 2. When pressure The guard 4 acts as aaccomplishing a similar purpose and wherein generic claims are containedcovering the instant disclosure;

The mechanism hereinbefore described is set in either of the releasefire or straight fire positions by manual forward or rearward movementof the trigger, respectively. It is obvious that suitable indicia may:be placed upon the firearm adjacent the trigger so as to indicate thefiring position of the latter.

Having thus described my invention, I claim:

1; A firearm convertible from straight fire to release fire operationand vice versa, said fire arm comp-rising an impact member, a trigger, asear, a detent separate from the sear and trigger temporarilylholdingthe impact member cocked independently of the sear under certainconditions, said trigger being common to said sear and detent, and a,mounttherefor upon which the trigger is bodily slidable into alternateoperative positions, in one of which upon manual retraction it willdisengage the sear to release the impact member independently ofactuation of the detent and in the other of which the trigger isoperative upon manual retraction to disengage the sear from the impactmember and simultaneously engage the detent with the impact member, fromwhich latter it is automatically disengaged upon release of the trigger.

2. A firearm convertible from straight fire to release fire operationand vice versa, said firearm comprising a trigger, a trigger releasableimpact member, a sear normally biased into engagement with said impactmember for temporarily holding the latter in cocked position, a detentindependent of the sear and trigger engageable with the impact member tohold the impact member in its cocked position subsequent todisengagement of thesear therefrom by the trigger while the firearm isin condition for release fire operation, and means for mounting thetrigger for bodil movement into and out of release and straight firecontrol positions, said trigger having a contact area engageable withsaid detent to move the latter into operative engagement with the impactmember when the firearm is conditioned for release fire operation andfor movement out of operative relation with the detent by the bodilymovement of the trigger when the firearm is conditioned for straightfire operation, the detent being disengageable from the impact member byrelease of retractive pressure upon the trigger when the firearm isconditioned for release fire operation.

3. A firearm convertible from straight fire to release fire operationand vice versa, in accordance with claim 1, wherein the detent ismounted for pivotal movement between the impact memher and the trigger.

4'. A firearm convertible from straight fire to release fire operationand vice versa, in accordance with claim 1, wherein the trigger ismounted for pivotal and sliding movement relative to the sear anddetent.

CHARLES A. YOUNG.

